[ElCompat] Use Webpack module for clipboard copy

moduleWrappers/electron/clipboard.js

@@ -1,7 +1,9 @@
+const { copy } = goosemod.webpackModules.findByProps('SUPPORTS_COPY', 'copy'); // Use Webpack module for Web support (instead of DiscordNative)
+
 export const writeText = (text) => { // Write text to clipboard
-  return DiscordNative.clipboard.copy(text);
+  return copy(text);
 };
 
 export const readText = () => { // Read text from clipboard
-  return DiscordNative.clipboard.read();
+  return DiscordNative.clipboard.read(); // Web doesn't support clipboard reading (no Webpack for it like copy) - use DiscordNative
 };

src/preprocessors/genericTheme.js

@@ -115,8 +115,20 @@ export default async (manifest, _content, repo) => {
       break;
     }
 
+    let abortNoVal = false;
+
     while (v[1].startsWith('var(')) {
-      v[1] = variables.find((y) => y[0] === v[1].slice(4, -1))[1];
+      v[1] = variables.find((y) => y[0] === v[1].slice(4, -1))?.[1];
+
+      if (!v[1]) {
+        abortNoVal = true;
+        break;
+      }
+    }
+
+    if (abortNoVal) {
+      console.log('aborting color palette image, could not find var substitute', wanted);
+      break;
     }
 
     imagePalette.push([v[0], v[1]]);